אסיף מאגר המחקר החקלאי

Behavior of Atrazine and Terbuthylazine in an Irrigated Field: I. Soil and Management Spatial Variability

Year:

1999

Source of publication :

Authors :

Volume :

43

Co-Authors:

Dror, I., Inst. Soil, Water, Environ. Sci. ARO, Volcani Center, Bet Dagan, Israel
Kliger, L., Inst. Soil, Water, Environ. Sci. ARO, Volcani Center, Bet Dagan, Israel
Laufer, A., Inst. Soil, Water, Environ. Sci. ARO, Volcani Center, Bet Dagan, Israel
Hadas, A., Inst. Soil, Water, Environ. Sci. ARO, Volcani Center, Bet Dagan, Israel
Russo, D., Inst. Soil, Water, Environ. Sci. ARO, Volcani Center, Bet Dagan, Israel
Yaron, B., Inst. Soil, Water, Environ. Sci. ARO, Volcani Center, Bet Dagan, Israel

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Abstract:

A field experiment was designed to study the dissipation and redistribution of herbicides under leaching by irrigation and rainfall as affected by spatial variability of the soil and non-uniform management. Atrazine and terbuthylazine were the herbicides studied and calcium bromide was used as a conservative tracer. The non uniform application of the chemicals on the field surface as well as the non uniform application of water during leaching were the management parameters which were considered together with the parameters of the soil saturated conductivity (Ks) and Gardner parameter (α) for defining the effect of soil spatial variability and non uniform management on the dissipation and redistribution of herbicides in the experimental irrigated field. Data on In Ks and In α spatial distribution as well as variograms of chemicals and water distribution on the experimental field are presented and discussed.

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